EP0739768A2 - Dispositif de climatisation - Google Patents

Dispositif de climatisation Download PDF

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Publication number
EP0739768A2
EP0739768A2 EP96103205A EP96103205A EP0739768A2 EP 0739768 A2 EP0739768 A2 EP 0739768A2 EP 96103205 A EP96103205 A EP 96103205A EP 96103205 A EP96103205 A EP 96103205A EP 0739768 A2 EP0739768 A2 EP 0739768A2
Authority
EP
European Patent Office
Prior art keywords
fresh air
conditioning system
air
condenser
air conditioning
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP96103205A
Other languages
German (de)
English (en)
Other versions
EP0739768B1 (fr
EP0739768A3 (fr
Inventor
Walter Leutz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aurora Konrad G Schulz GmbH and Co KG
Original Assignee
Aurora Konrad G Schulz GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Aurora Konrad G Schulz GmbH and Co KG filed Critical Aurora Konrad G Schulz GmbH and Co KG
Publication of EP0739768A2 publication Critical patent/EP0739768A2/fr
Publication of EP0739768A3 publication Critical patent/EP0739768A3/fr
Application granted granted Critical
Publication of EP0739768B1 publication Critical patent/EP0739768B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00371—Air-conditioning arrangements specially adapted for particular vehicles for vehicles carrying large numbers of passengers, e.g. buses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating devices
    • B60H1/00007—Combined heating, ventilating, or cooling devices
    • B60H1/00207—Combined heating, ventilating, or cooling devices characterised by the position of the HVAC devices with respect to the passenger compartment
    • B60H2001/00235—Devices in the roof area of the passenger compartment

Definitions

  • the invention relates to an air conditioning system according to the preamble of claim 1.
  • Such air conditioning is known from DE-OS-32 24 895.
  • This air conditioning system is placed as a so-called scoop on the roof of a motor vehicle, in particular an omnibus, and consists of a combination of condensers with corresponding fans and heat exchangers, to which corresponding fans are also assigned, the fans being connected downstream of the condensers or heat exchangers.
  • heat exchangers are understood to mean a heat exchanger, an evaporator or a combination of these.
  • the condenser unit is arranged in front of the heat exchanger unit. This makes the overall construction comparatively long.
  • the side of the heat exchangers are used for each blower and the space between the blowers is taken up by comparatively wide and therefore quite heavy lying heat exchangers, as can be seen, for example, from FIGS. 6, 7, 10 and 11 of DE-OS-32 24 895.
  • the invention has for its object to provide an air conditioning system according to the preamble of claim 1, which enables a weight reduction by means of measures that are simple to construct, wherein a reduced overall length is also possible.
  • the air conditioning system according to the invention provides fresh air / circulating air flaps in front of the heat exchangers in a manner known per se, controllable fresh air and / or circulating air operation is initially possible.
  • a very special advantage derives from the measure that the fresh air opening is blocked in terms of flow technology in the recirculation mode. In practice, an excess pressure builds up in the space between the fresh air opening and the fresh air / recirculation flap due to the resulting back pressure, so that the obliquely arranged fresh air opening, which is assigned to the heat exchangers, automatically increases the back pressure for the condensers in recirculation mode.
  • This arrangement thus enables an automatic increase in performance for the condensers in recirculating air mode, which is particularly advantageous because the air conditioning is carried out regularly with recirculating air.
  • dynamic pressure is also available when fresh air is required, for example in heating mode.
  • the back pressure on the condensers is in turn automatically reduced, which is advantageous in that they are then not required and only act as flow obstacles if the back pressure is too high.
  • the air resistance coefficient is therefore as low as possible due to the automatic and targeted switchover, which maximizes the dynamic pressure at the required points. Since the blower output can also be reduced by supporting both the heat exchanger blowers and the condenser blowers due to the optimized dynamic pressure, the overall energy balance is considerably more favorable than in the known solutions.
  • the invention can be implemented with simple means. Only one swivel flap is required in front of the heat exchanger, which can be actuated, for example, electrically, hydraulically or pneumatically. In particular, it is not necessary to provide a swivel flap in the inflow area of the air conditioning system that is sensitive to contamination; rather, the coarsest dirt can be kept out of the region of the swivel flap by the flow deflection when the axis of the swivel flap is arranged parallel to the central axis.
  • the condenser fans are staggered to save space.
  • a compact configuration of the condenser unit can be achieved, the arrangement in the area of maximum negative pressure contributing to a further reduction in the required performance of the condenser fan.
  • an air conditioning system according to the invention 10 has heat exchangers 12, 14 which are arranged along a roof of a vehicle, not shown.
  • the heat exchangers 12, 14 each consist of an evaporator 16 and a heating heat exchanger 18. Still outside, i.e. At a greater distance from a central axis 20 of the vehicle, double radial fans 22 are provided, which blow air passing through the heat exchanger 12, 14 into the interior of the vehicle.
  • the heat exchangers 12, 14 are accordingly flowed through from the inside to the outside. Furthermore, on the input side of the heat exchanger 12, 14, filters 24 are provided, to which fresh air / circulating air actuators, which are designed here as fresh air / circulating air flaps 26 are upstream.
  • the fresh air / recirculated air flaps 26 optionally allow the supply of recirculated air from the interior of the car and the supply of fresh air from a room 28.
  • the room 28 is in flow connection with a heat exchanger fresh air opening 30, which can be covered, for example, by a grille 32 that 3 can be seen.
  • the heat exchanger fresh air openings extend on inclined surfaces 32 and form a kind of nozzle towards the central axis 20 due to their effect. They extend practically over the entire inclined surface 32 and thus connect to a condenser fresh air opening 34, which is provided over the entire width between the heat exchanger fresh air openings 30, 30.
  • the condenser fresh air opening 34 is also covered with a grid 36, which can be seen in FIG. 3.
  • a wedge-shaped space 38 extends after the condenser fresh air opening 34, and a condenser 40 and then a condenser 42 thereafter.
  • the condenser 40 is somewhat narrower than the condenser 42, so that the space 28 also has a slightly wedge shape when viewed in the horizontal plane .
  • a certain deflection and the baffle formed are desirable here in order to separate any dirt particles before they reach the area of the fresh air / circulating air flaps 26.
  • the required air flow in the rear area of the fresh air / recirculation flaps is lower, so that a correspondingly smaller flow cross section is sufficient.
  • the larger available width of the condenser 42 opens up the possibility of arranging the condenser blowers 44, 46, 48, 50 as compactly and offset as possible in such a way that they partially overlap the heat exchanger 42 and work in the area of maximum negative pressure, so that the airstream blows the effect of the blowers 44 to 50 is supported.
  • it has turned out to be special Conveniently highlighted when the two front condenser fans 46, 48 overlap the heat exchanger 42 half.
  • the configuration of the air conditioning system 10 according to the invention can be seen in section from FIG. 2.
  • the same reference numerals designate the same parts.
  • the space 28 adjoining the inclined surface 32 is sufficiently large to allow the flow to calm.
  • the fresh air / circulating air flaps 26 can be pivoted about a pivot axis 52, specifically by about 90 °.
  • Pure air recirculation mode is provided in an almost vertical position 54, in which air recirculation is sucked out of the interior 58 of the bus via an air recirculation opening 56 and, after filtering by filter 24, is successively fed to the heating heat exchanger 18, the evaporator 16 and the double radial fan 22.
  • the double radial fan 22 then blows the circulating air out into a pressure chamber 59, which is equipped in a manner known per se with nozzles which are arranged above the seats of the passengers.
  • the fresh air / recirculation flap 26 has a lying position 62 in pure fresh air mode, so that air can flow from the room 28 into the heat exchanger 12, 14 without further deflection.
  • the upper edge of the condenser unit 64 which comprises the condensers 40, 42, the condenser fans 44 to 50 and the condenser fresh air opening 34, is almost level with the unit of the heat exchangers 12, 14, so that the drag coefficient the vehicle is not deteriorated by protruding parts.
  • the condensers 40, 42 extend at a fairly flat angle from the top front to the back bottom.
  • an oblique air guide element 66 can be provided, which improves the inflow of the front condenser 40.
  • a roof skin 68 of the vehicle in the area of the condenser unit 64 is free of openings. It goes without saying that it has the necessary circulating air openings and outflow openings for the double radial fans 22 in the area of the heat exchangers 12, 14. It is understood that the roof skin 68, however, has openings for the supply of the coolant to the condensers 40, 42, which can be combined at a suitable point. A corresponding coolant collector 70 is indicated below the blower 46.
  • axial fans can be used particularly advantageously as condenser fans 44, 46.
  • radial blowers can also be used instead if this is desired.
  • the invention also allows preassembly on a scoop 72 which forms the upper end of the air conditioning system 10 according to the invention. Accordingly, only the electrical and hydraulic connections then have to be connected for the assembly, so that the final assembly is quite inexpensive.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air-Conditioning For Vehicles (AREA)
EP96103205A 1995-04-28 1996-03-01 Dispositif de climatisation Expired - Lifetime EP0739768B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19515793 1995-04-28
DE19515793A DE19515793A1 (de) 1995-04-28 1995-04-28 Klimaanlage

Publications (3)

Publication Number Publication Date
EP0739768A2 true EP0739768A2 (fr) 1996-10-30
EP0739768A3 EP0739768A3 (fr) 1998-04-29
EP0739768B1 EP0739768B1 (fr) 2001-01-31

Family

ID=7760685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96103205A Expired - Lifetime EP0739768B1 (fr) 1995-04-28 1996-03-01 Dispositif de climatisation

Country Status (4)

Country Link
EP (1) EP0739768B1 (fr)
DE (2) DE19515793A1 (fr)
IL (1) IL117853A (fr)
TR (1) TR199600299A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016164062A (ja) * 2015-02-27 2016-09-08 株式会社デンソー 車両用空調装置
EP3385100A4 (fr) * 2015-12-02 2019-04-24 Denso Corporation Unité de toit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2857622B1 (fr) * 2003-07-16 2007-04-06 Valeo Climatisation Appareil de ventilation, de chauffage et/ou de climatisation pour une zone arriere d'un habitacle de vehicule automobile

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3224895A1 (de) * 1982-07-03 1984-01-05 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Klimaanlage fuer kraftfahrzeuge
US4727728A (en) * 1983-05-12 1988-03-01 Thermo King Corporation Bus air conditioning unit for roof top mounting
DE3406249A1 (de) * 1984-02-21 1985-08-22 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Klimaanlage fuer kraftfahrzeuge, insbesondere omnibusse
DE3420533A1 (de) * 1984-06-01 1985-12-05 Webasto-Werk W. Baier GmbH & Co, 8035 Gauting Klimaanlage zur aufdachmontage fuer kraftfahrzeuge
US5005372A (en) * 1990-04-27 1991-04-09 Thermo King Corporation Air conditioner unit for mounting on or in the roof of a vehicle
US5285654A (en) * 1992-11-06 1994-02-15 Suetrak Air Conditioning Sales Corporation Evaporative cooling/heating system with roof-mounted water tank

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016164062A (ja) * 2015-02-27 2016-09-08 株式会社デンソー 車両用空調装置
EP3263375A4 (fr) * 2015-02-27 2018-03-07 Denso Corporation Appareil de climatisation de véhicule
EP3385100A4 (fr) * 2015-12-02 2019-04-24 Denso Corporation Unité de toit

Also Published As

Publication number Publication date
IL117853A (en) 2002-07-25
EP0739768B1 (fr) 2001-01-31
EP0739768A3 (fr) 1998-04-29
TR199600299A2 (tr) 1996-11-21
IL117853A0 (en) 1996-08-04
DE59606399D1 (de) 2001-03-08
DE19515793A1 (de) 1996-10-31

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